Let x = the mean and s = the standard deviation of scores on a test for a class of n students. Suppose everyone's score is multiplied by r. For the image scores find the mean
variance
standard deviation

What is the solution set of the quadratic inequality x^2-5< or equal to 0

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

Long division setup showing an incomplete calculation. 12 is in the divisor, 6839 is in the dividend, and 5 hundreds and 6 tens is written in the quotient. 6000 is subtracted from 6839 to give 839. an unknown value represented by a box is being subtracted from 839. what number should be placed in the box to complete the division calculation?